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x=5/3
x=2 i 2/3
b)x/2=x+1/4 //*2
x=2x+1/2
-x=1/2 //*(-1)
x=-1/2
c)2(x=1)/3=x+2/5 //*3
2x+2=3x+6/5
2+6/5=3x-2x
x=3 i 1/5
//* oznacza obustronne dzielenie